Video of RT5: Price is for (2) Pairs of Rockville RT5 2.8" Aluminum Car/Pro Tweeters w Titanium Diaphragm+Kapton VC What's In The Box: (2) RT5 Tweeters Pre-Installed Mounting Screws Mounting Screws and Hardware Warranty Card Owner's Manual Features: Pair Rockville RT5 2.8" Aluminum Car/Pro Tweeters with Titanium Diaphragm and Kapton VC 1” High Temperature Die Cast Kapton Voice Coil Extremely loud and clear highs with an amazing frequency response that can even play some mids Ferro Fluid Enhanced Voice Coil Cooling Shallow Mounting Depth 10oz. Magnet Includes Mounting Hardware Impedance: 4 Ohm Cutout Diameter: 2.8” Mounting Depth: 1.66” Frequency Response: 2kHz - 20kHz Sensitivity: 96dB @ 1w / 1m TS Parameters: Fo : 2.041kHZ Re : 3.6 OHM Qes : 11.995 Qts : 2.74 Qms : 3.551 Krm : 11.224u Ohm Erm : 1.034 Kxm : 1.531mH Exm : 0.592 Simple and quick tweeter installation: 1. Choose mounting location, typically rear deck or door panel. 2. With the provided template cut a hole 2.8" in diameter make sure that you have a minimum of 1.66" mounting depth. 3. Using the included hardware, screw the tweeter into your mounting location